CN115751611A - Partial load non-stop defrosting control method and device and variable frequency air conditioner - Google Patents
Partial load non-stop defrosting control method and device and variable frequency air conditioner Download PDFInfo
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- CN115751611A CN115751611A CN202211287068.3A CN202211287068A CN115751611A CN 115751611 A CN115751611 A CN 115751611A CN 202211287068 A CN202211287068 A CN 202211287068A CN 115751611 A CN115751611 A CN 115751611A
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- 238000010257 thawing Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000036961 partial effect Effects 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 230000001629 suppression Effects 0.000 claims abstract description 28
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 25
- 230000001965 increasing effect Effects 0.000 claims abstract description 23
- 230000002829 reductive effect Effects 0.000 claims abstract description 22
- 238000004590 computer program Methods 0.000 claims description 12
- 230000000452 restraining effect Effects 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to the technical field of air conditioners, in particular to a partial load non-stop defrosting control method, a partial load non-stop defrosting control device and a variable frequency air conditioner. The partial load non-stop defrosting suppression control method comprises the following steps: when the air conditioner is in heating operation, acquiring the outdoor environment temperature and the temperature of the outer coil; judging whether the air conditioner meets the non-stop defrosting-inhibiting condition or not according to the outdoor environment temperature and the temperature of the outer coil; if so, controlling the running frequency of the compressor to be reduced, and controlling the rotating speed of the outer fan to be increased; if not, the air conditioner is controlled to normally operate according to the established heating control logic. The partial load non-stop defrosting inhibiting control method, the control device and the variable frequency air conditioner provided by the invention can improve the added value of products and the comfort experience of customers under partial load on the basis of not increasing the cost of the air conditioner, and are more energy-saving, environment-friendly and higher in reliability.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a partial load non-stop defrosting control method, a partial load non-stop defrosting control device and a variable frequency air conditioner.
Background
When the heat pump air conditioning unit is in heating operation in a low-temperature environment, the condenser is often frosted, and the existence of a frost layer increases the heat exchange thermal resistance and airflow flowing resistance of the evaporator, so that the performance coefficient of the air conditioning unit is reduced, the energy consumption is increased, and even the problem of unit operation failure is caused.
The existing heat pump air conditioning unit generally defrosts a condenser by controlling the reversing of a four-way reversing valve, and can generate higher energy consumption; in addition, once the reverse work of four-way reversing valve, heat pump air conditioner base will stop heating, influences indoor thermal comfort, and user experience feels relatively poor.
Disclosure of Invention
The invention aims to provide a partial load non-stop defrosting restraining control method, a partial load non-stop defrosting restraining control device and a variable frequency air conditioner, and aims to solve the technical problems that in the prior art, a heat pump air conditioning unit is high in energy consumption during defrosting and poor in indoor thermal comfort.
The invention provides a partial load non-stop defrosting control method, which is characterized by comprising the following steps:
when the air conditioner is in heating operation, acquiring the outdoor environment temperature and the temperature of the outer coil;
judging whether the air conditioner meets the non-stop defrosting-inhibiting condition or not according to the outdoor environment temperature and the temperature of the outer coil pipe;
if so, controlling the running frequency of the compressor to be reduced, and controlling the rotating speed of the outer fan to be increased;
if not, the air conditioner is controlled to normally operate according to the established heating control logic.
Compared with the prior art, the invention has the beneficial effects that:
the partial load non-stop defrosting control method provided by the invention can improve the added value of products and the comfort experience of customers under partial load on the basis of not increasing the cost of the air conditioner, and is more energy-saving, environment-friendly and higher in reliability.
As an implementation manner, the determining whether the air conditioner satisfies the non-stop defrosting-inhibiting condition according to the outdoor environment temperature and the external coil temperature includes:
if the outdoor environment temperature is higher than a first set temperature and lower than or equal to a second set temperature, calculating the difference value between the outdoor environment temperature and the temperature of the external coil;
judging whether the duration of the difference value which is greater than or equal to a first threshold is greater than a first preset duration or not;
if yes, determining that the non-stop defrosting-inhibiting condition is met;
if not, determining that the non-stop defrosting-inhibiting condition is not met.
The method has the beneficial effects that the judgment on the frosting condition of the condenser and the defrosting capacity of outdoor air is realized.
As an implementation manner, the determining whether the air conditioner satisfies the non-stop defrosting-inhibiting condition according to the outdoor environment temperature and the external coil temperature further includes:
if the outdoor environment temperature is higher than a third set temperature and lower than or equal to the first set temperature, calculating the difference value between the outdoor environment temperature and the temperature of the outer coil;
judging whether the duration of the difference value which is greater than or equal to a second threshold value is greater than a second preset duration or not;
if yes, determining that the non-stop defrosting suppression condition is met;
if not, determining that the non-stop defrosting inhibiting condition is not met;
the second threshold is smaller than the first threshold, and the second preset duration is smaller than the first preset duration.
The defrosting control method has the advantages that the frosting condition of the condenser and the defrosting capacity of outdoor air are judged, and the defrosting control method can enter the defrosting suppression control logic in advance on the premise that the frost layer is thick and the defrosting effect of air suppression is poor, so that the defrosting suppression effect is ensured.
As an implementation mode, the value range of the first set temperature is 1-5 ℃, the value range of the second set temperature is 6-10 ℃, the value range of the third set temperature is-3-1 ℃, the difference value range of the second set temperature and the first set temperature is 4-6 ℃, and the difference value range of the first set temperature and the third set temperature is 3-5 ℃;
and/or the value range of the first threshold is 7-11 ℃, and the value range of the second threshold is 7-9 ℃;
and/or the value range of the first preset time is 1-2 min, and the value range of the second preset time is 30 s-1 min.
The beneficial effect lies in, can obtain the defrosting effect that suppresses of preferred.
As an embodiment, the controlling the operation frequency of the compressor to be decreased and the wind gear of the outer fan to be lifted includes:
if the outdoor environment is higher than the first set temperature and lower than or equal to the second set temperature, and the duration of the difference value which is larger than or equal to the first threshold value is longer than the first preset duration, controlling the operating frequency of the compressor to be reduced to the first frequency, and controlling the rotating speed of the outer fan to be increased by a preset amplitude for a third preset duration;
and/or if the outdoor temperature is higher than the third set temperature and lower than or equal to the first set temperature, and the duration of the difference value which is higher than or equal to the second threshold value is longer than the second preset duration, controlling the operating frequency of the compressor to be reduced to a second frequency, and controlling the rotating speed of the outer fan to be increased to a preset rotating speed for a fourth preset duration;
the second frequency is less than or equal to the first frequency, the second amplitude is greater than or equal to the first amplitude, and the fourth preset duration is greater than the third preset duration.
The beneficial effect is that, can reach good defrosting effect.
As an embodiment, the first frequency is 30% to 50% of the current frequency, and the second frequency is the lowest operating frequency of the compressor;
and/or the preset amplitude ranges from 100rpm to 200rpm, and the preset rotating speed is the rotating speed corresponding to the highest windshield of the outer fan;
and/or the value range of the third preset time is 2 min-3 min, and the value range of the fourth preset time is 3 min-4 min.
The defrosting device has the beneficial effect that a better defrosting inhibiting effect can be obtained.
As an implementable embodiment, the method further comprises:
after the air conditioner is started for a fifth preset time period, the step of judging whether the outdoor environment temperature and the temperature of the external coil meet the non-stop defrosting inhibiting condition is executed;
and/or, every sixth preset time interval, executing the step of judging whether the outdoor environment temperature and the temperature of the external coil pipe meet the non-stop defrosting-inhibiting condition once.
The beneficial effect lies in, can guarantee the defrosting effect that restraines of air conditioner in the heating operation process.
The invention also provides a partial load non-stop defrosting control device, which comprises:
the acquisition module is used for acquiring the outdoor environment temperature and the temperature of the external coil pipe when the air conditioner is in heating operation;
the judging module is used for judging whether the outdoor environment temperature and the temperature of the outer coil meet the non-stop defrosting-inhibiting condition or not;
the control module is used for controlling the running frequency of the compressor to be reduced and the rotating speed of the outer fan to be increased when the judgment result is yes; and when the judgment result is negative, controlling the air conditioner to normally operate according to the established heating control logic.
The invention also provides a variable frequency air conditioner which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the partial load non-stop defrosting suppression control method.
The invention also provides a computer readable storage medium, which stores a computer program, and when the computer program is read and operated by a processor, the partial load non-stop defrosting control method is realized.
The partial load non-stop defrosting suppression control device, the variable frequency air conditioner and the computer readable storage medium have the technical effects consistent with the partial load non-stop defrosting suppression control method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a first schematic flow chart of a part load non-stop defrost control method provided by an embodiment of the present invention;
FIG. 2 is a second schematic flow chart of a part load non-stop defrost control method provided in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a partial load non-stop defrosting control device according to an embodiment of the present invention.
Description of reference numerals:
301-an obtaining module; 302-a judgment module; 303-control module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
FIG. 1 is a schematic flow chart of a part load non-stop defrost control method provided in one embodiment of the present invention, the method comprising:
and S102, acquiring the outdoor environment temperature and the temperature of the external coil pipe when the air conditioner is in heating operation.
The original sensor of usable air conditioner monitors outdoor ambient temperature and outer coil pipe temperature, need not to increase components and parts, can not increase the cost.
And S104, judging whether the air conditioner meets the non-stop defrosting-inhibiting condition or not according to the outdoor environment temperature and the temperature of the external coil.
Specifically, when the outdoor environment temperature meets the requirement on the outdoor environment temperature in the no-shutdown defrosting condition, the difference value between the outdoor environment temperature and the temperature of the external coil is calculated, and when the difference value meets the requirement on the difference value in the no-shutdown defrosting condition, the air conditioner is determined to meet the no-shutdown defrosting condition, and the no-shutdown defrosting control logic can be operated; otherwise, determining that the air conditioner does not meet the non-stop defrosting-inhibiting condition.
And S106, if so, controlling the running frequency of the compressor to be reduced, and increasing the rotating speed of the outer fan.
When the air conditioner meets the condition of non-stop defrosting, the condenser is frosted, and at the moment, the running frequency of the compressor can be controlled to be reduced so as to improve the temperature of the external coil pipe and inhibit the frosting of the condenser; meanwhile, the rotating speed of the outer fan is controlled to be increased, so that the flow velocity of air with higher temperature in the outdoor environment near the condenser is increased, further, the efficiency of transferring heat in the outdoor environment to the condenser is improved, namely, the defrosting inhibiting effect of the air on the condenser can be enhanced, on the basis, the air conditioner can ensure continuous heating operation, the reverse defrosting of the four-way reversing valve is not required to be controlled, and the added value of products and the comfort experience of customers in partial heating scenes are improved; in addition, the outdoor environment heat is utilized to carry out defrosting suppression treatment on the condenser, so that the energy consumption is reduced, the energy is saved, the environment is protected, and the reliability is higher.
And S108, if not, controlling the air conditioner to normally operate according to the established heating control logic.
The step S104 may include the following three cases:
a1, if the outdoor environment temperature is higher than a first set temperature and lower than or equal to a second set temperature, calculating the difference value between the outdoor environment temperature and the temperature of an external coil; and judging whether the duration of the difference value which is greater than or equal to the first threshold is greater than a first preset duration, if so, determining that the non-stop defrosting condition is met, and if not, determining that the non-stop defrosting condition is not met. That is, under the low-temperature heating condition, when the outdoor environment temperature is in a moderate temperature range, if the difference between the outdoor environment temperature and the temperature of the external coil is continuously large, it indicates that frosting has occurred at this time, and the outdoor air has the capacity of defrosting the condenser, at this time, the air conditioner can operate the defrosting control logic without stopping to defrost the condenser.
Specifically, the value range of the first set temperature can be set to 1-5 ℃, and preferably set to 3 ℃; the value range of the second set temperature can be set to be 6-10 ℃, and is preferably set to be 8 ℃; the difference between the second set temperature and the first set temperature may be set to 4 to 6 c, preferably 5 c, so that the outdoor air has a capability of defrosting the condenser when the outdoor ambient temperature satisfies the condition in A1, and the defrosting capability is high. The value range of the first threshold value can be set to be 7-11 ℃, and is preferably set to be 9 ℃; the value range of the first preset time can be set to be 1-2 min, preferably 1min, and under the condition, the defrosting suppression control logic is operated, so that a better defrosting suppression effect can be obtained. For example, if the outdoor environment temperature is higher than 3 ℃ and lower than or equal to 8 ℃, the difference between the outdoor environment temperature and the temperature of the outer coil is further judged, and if the outdoor environment temperature-the temperature of the outer coil is higher than or equal to 9 ℃ and lasts for 1min, the condenser is thin and frosted, and defrosting treatment needs to be carried out.
A2, if the outdoor environment temperature is higher than the third set temperature and lower than or equal to the first set temperature, calculating the difference value between the outdoor environment temperature and the temperature of the external coil; and judging whether the duration of the difference value which is greater than or equal to the second threshold is greater than a second preset duration, if so, determining that the non-stop defrosting-inhibiting condition is met, and if not, determining that the non-stop defrosting-inhibiting condition is not met. That is, under the low-temperature heating condition, when the outdoor environment temperature is in a moderate temperature range, if the difference between the outdoor environment temperature and the temperature of the external coil is continuously large, it indicates that frosting has occurred at this time, and the outdoor air has the capacity of defrosting the condenser, and at this time, the air conditioner can operate the defrosting suppression control logic without stopping.
Because the outdoor environment temperature defined in A2 is lower than the outdoor environment temperature defined in A1, relatively speaking, when the outdoor environment temperature meets the condition in A2, the condenser is easier to frost, the frost layer is thicker, and the defrosting effect of air suppression is relatively poor, therefore, the second threshold value can be set to be smaller than the first threshold value, and meanwhile, the second preset duration is set to be smaller than the first preset duration, so that the defrosting control logic is entered in advance to ensure the defrosting effect.
Specifically, the value range of the third set temperature can be set to-3 ℃ to 1 ℃, and is preferably set to-1 ℃; the difference between the first set temperature and the third set temperature may be set to 3 to 5 c, preferably to 4 c, so that the outdoor air still has the capability of defrosting the condenser when the outdoor environment satisfies the condition in A2, but the defrosting capability is relatively poor. The value range of the first threshold value can be set to be 7-11 ℃, and is preferably set to be 9 ℃; the value range of the first preset time can be set to be 1-2 min, preferably 1min, and under the condition, the defrosting suppression control logic is operated, so that a better defrosting suppression effect can be obtained. For example, if the outdoor environment temperature is lower than-1 ℃ and lower than or equal to 3 ℃, the difference between the outdoor environment temperature and the temperature of the external coil is further judged, and if the outdoor environment temperature and the temperature of the external coil are higher than or equal to 8 ℃ and continue for 30 seconds, the fact that the outdoor unit has frosted is indicated, and defrosting suppression treatment is needed.
And A3, if the outdoor environment is higher than the second set temperature or lower than or equal to a third set temperature, determining that the non-stop defrosting suppression condition is not met. It should be noted that, under the condition of low-temperature heating, when the outdoor environment temperature is high, the condenser is not easy to frost, generally, the defrosting control logic does not need to be operated, and the air conditioner can normally operate according to the established control logic of heating; when the outdoor environment temperature is low, the outdoor air does not have the capacity of defrosting the condenser, at the moment, the air can not be directly utilized by default to perform defrosting suppression treatment, the air conditioner can normally operate according to the established heating control logic, namely, when the defrosting condition is met, the four-way reversing valve is controlled to reversely defrost, so that the normal operation of the air conditioner is ensured.
The step S106 may include the following two cases:
b1, when the air conditioner meets the conditions in the A1, the frosting speed of the condenser is low, the defrosting capacity of the air is high, and the defrosting inhibiting control logic is operated, the operation frequency of the compressor can be controlled to be reduced to a first frequency, so that the temperature of the outer coil pipe is increased, and the frosting of the condenser is inhibited; and the rotating speed of the outer fan is controlled to increase the preset amplitude so as to increase the flow speed of air with higher temperature in the outdoor environment near the condenser, enhance the defrosting effect of the air on the condenser, and last for a third preset time so as to achieve a good defrosting effect.
Specifically, the value range of the first frequency may be set to 30% to 50% of the current frequency, and is preferably set to 40% of the current frequency; the value range of the preset amplitude can be set to be 100 rpm-200 rpm, preferably 150rpm, and at the moment, the rotating speed of the external fan is increased by one gear; the value range of the third preset time can be set to be 2-3 min, preferably 2min, the air conditioner runs the defrosting suppression control logic according to the parameter, the defrosting speed of the condenser and the defrosting capacity of air energy can be matched, and a good defrosting suppression effect is obtained. For example, the operating frequency of the compressor is reduced to 40% of the current frequency, and the outer fan speed is increased by one step (150 rpm) for 2min.
B2, when the air conditioner meets the conditions in the A2, the frosting speed of the condenser is high, the defrosting capacity of the air energy is weak, and the defrosting inhibiting control logic is operated, the operation frequency of the compressor can be controlled to be reduced to a second frequency, wherein the second frequency is less than or equal to the first frequency, so that the temperature of the outer coil pipe is increased, and the frosting of the condenser is inhibited; and controlling the rotating speed of the outer fan to be increased to a preset rotating speed so as to increase the flow speed of air with lower temperature in the outdoor environment near the condenser, enhancing the defrosting effect of the air on the condenser, and lasting for a fourth preset time period, wherein the fourth preset time period is longer than the third preset time period, so that the defrosting time is prolonged, and a good defrosting effect is achieved.
Specifically, the value range of the second frequency can be set to be the lowest operation frequency of the compressor, the preset rotating speed can be set to be the highest rotating speed of the outer fan, the value range of the fourth preset time can be set to be 3-4 min, preferably 3min, the air conditioner operates the defrosting suppression control logic according to the parameter, the frosting speed of the condenser and the defrosting capacity of air energy can be matched, and a good defrosting suppression effect is obtained. For example, the operation frequency of the compressor is reduced to the lowest frequency of the unit allowable lower limit, and the outer fan is operated at the highest wind gear for 3min.
Since there is hysteresis in the temperature of the external coil during the heating operation of the air conditioner, it is preferable that the step S104 is started after the fifth preset time period of the heating operation of the air conditioner. Wherein, the fifth preset time period may be set to 10min.
In the heating operation process of the air conditioner, the step S104 may be executed once every sixth preset time period, so as to control the air conditioner according to the real-time condition, and ensure the defrosting suppression effect of the air conditioner in the heating operation process. Wherein, the sixth preset time period may be set to 20min.
FIG. 2 is a schematic flow diagram of a part load non-stop defrost control method provided in one embodiment of the present invention, the method comprising:
s201, starting an air conditioner;
s202, entering a heating mode;
s203, after heating operation is carried out for 10min, defrosting suppression judgment is carried out;
s204, then judging whether T is present Outer ring temperature More than 8 ℃; wherein, T Outer ring temperature Is the outdoor ambient temperature;
s205, if T Outer ring temperature If the temperature is higher than 8 ℃, controlling the air conditioner to normally operate according to the established heating control logic; if T Outer ring temperature If the temperature is higher than 8 ℃, judging whether the temperature is higher than 3 ℃ and lower than T Outer ring temperature ≤8℃；
S206, if T is less than 3 ℃ Outer ring temperature If the temperature is less than or equal to 8 ℃, judging whether T is present Outer ring temperature -T Temperature of outer plate Lasting for 1min at the temperature of more than or equal to 9 ℃;
s207, if yes, controlling the running frequency of the compressor to be reduced to 40% of the current frequency, and increasing the wind gear of the outer fan for 2min; if not, controlling the air conditioner to normally operate according to the established heating control logic;
s208, if the temperature is less than 3 ℃ < T Outer ring temperature If the temperature is not more than 8 ℃, judging whether the temperature is less than T at-1 DEG C Outer ring temperature ≤3℃；
S209, if-1 ℃ is less than T Outer ring temperature If the temperature is less than or equal to 3 ℃, judging whether T is present Outer ring temperature -T Temperature of outer plate The temperature is more than or equal to 8 ℃ for 30s;
s210, if so, controlling the running frequency of the compressor to be reduced to the lowest frequency, and controlling the outer fan to run at the highest wind gear for 3min; if not, controlling the air conditioner to normally operate according to the established heating control logic;
s211, if-1 ℃ is less than T Outer ring temperature If the temperature is not higher than 3 ℃, the air conditioner is controlled to normally operate according to the established heating control logic.
S212, performing periodic defrosting suppression judgment during heating operation of the air conditioner;
s213, exiting the heating mode;
and S214, turning off the air conditioner.
Fig. 3 is a schematic structural diagram of a partial-load non-stop defrost control apparatus according to an embodiment of the present invention, the apparatus comprising:
the acquiring module 301 is used for acquiring the outdoor environment temperature and the temperature of the external coil pipe when the air conditioner is in heating operation;
a judging module 302, configured to judge whether the outdoor environment temperature and the temperature of the external coil meet an un-shutdown defrosting-inhibiting condition;
the control module 303 is configured to control the operating frequency of the compressor to decrease and the rotating speed of the external fan to increase when the determination result is yes; and when the judgment result is negative, controlling the air conditioner to normally operate according to the established heating control logic.
The partial load does not shut down and suppresses defrosting controlling means that this embodiment provided, outdoor ambient temperature and outer coil pipe temperature that the original sensor of air conditioner monitored can be acquireed to acquisition module 301, judge module 302 can realize the judgement to the condition of not shutting down and suppressing the defrosting, control module 303 can be when judging module 302 and confirm that satisfy the condition of not shutting down and suppressing the defrosting for the air conditioner, control air conditioner execution does not shut down and suppresses the defrosting control logic, thereby, on the basis that does not increase the air conditioner cost, the added value of product and the customer's travelling comfort under the partial load experience have been improved, and it is more energy-concerving and environment-protective, the reliability is higher.
The determining module 302 may specifically include a calculating unit, a determining unit, and a determining unit, where the calculating unit is configured to calculate a difference between the outdoor environment temperature and the temperature of the external coil pipe when the outdoor environment temperature is greater than the first set temperature and less than or equal to the second set temperature; the judging unit is used for judging whether the duration of the difference value which is greater than or equal to the first threshold is greater than a first preset duration; the determining unit is used for determining that the non-stop defrosting condition is met when the judging result of the judging unit is yes, and determining that the non-stop defrosting condition is not met when the judging result of the judging unit is no.
The calculating unit is also used for calculating the difference between the outdoor environment temperature and the temperature of the external coil pipe when the outdoor environment temperature is higher than a third set temperature and lower than or equal to a first set temperature; the judging unit is further configured to judge whether a duration of the difference value being greater than or equal to a second threshold is greater than a second preset duration; the above-mentioned determining unit is further configured to determine that the non-stop defrosting suppression condition is satisfied when the judgment result of the judging unit is yes, and to determine that the non-stop defrosting suppression condition is not satisfied when the judgment result of the judging unit is no.
The control module 303 is configured to control the operating frequency of the compressor to be reduced to a first frequency, and control the rotational speed of the external fan to be increased by a preset range for a third preset duration when the outdoor environment is greater than the first preset temperature and less than or equal to the second preset temperature, and the duration of the difference value being greater than or equal to the first threshold is greater than the first preset duration.
The control module 303 is further configured to control the operating frequency of the compressor to be reduced to a second frequency, and control the rotational speed of the external fan to be increased to a preset rotational speed for a fourth preset time period when the outdoor temperature is greater than the third preset temperature and less than or equal to the first preset temperature, and the duration of the difference value being greater than or equal to the second threshold value is greater than the second preset time period.
The partial load non-stop defrosting control device provided by this embodiment can implement each process in the above-mentioned partial load non-stop defrosting control method embodiment, and for avoiding repetition, it is not described here again.
The embodiment also provides an inverter air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and when the computer program is read and run by the processor, the defrosting control method for controlling the partial load without stopping is realized.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is read by a processor and executed, the computer program implements each process of the above-mentioned partial load non-stop defrosting control method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art can understand that all or part of the processes in the methods according to the above embodiments may be implemented by instructing a control device to implement the methods according to the above embodiments by a computer, and the program may be stored in a computer-readable storage medium, and when executed, the program may include the processes according to the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, or the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A partial load non-stop defrosting control method is characterized by comprising the following steps:
when the air conditioner is in heating operation, acquiring the outdoor environment temperature and the temperature of the outer coil;
judging whether the air conditioner meets the non-stop defrosting-inhibiting condition or not according to the outdoor environment temperature and the temperature of the outer coil pipe;
if so, controlling the running frequency of the compressor to be reduced, and increasing the rotating speed of the outer fan;
if not, the air conditioner is controlled to normally operate according to the established heating control logic.
2. The partial load non-stop defrosting control method according to claim 1, wherein the determining whether the air conditioner satisfies the non-stop defrosting condition according to the outdoor environment temperature and the external coil temperature comprises:
if the outdoor environment temperature is higher than a first set temperature and lower than or equal to a second set temperature, calculating the difference value between the outdoor environment temperature and the temperature of the external coil;
judging whether the duration of the difference value which is greater than or equal to a first threshold value is greater than a first preset duration or not;
if yes, determining that the non-stop defrosting-inhibiting condition is met;
if not, determining that the non-stop defrosting restraining condition is not met.
3. The partial load non-stop defrosting control method according to claim 2, wherein the determining whether the air conditioner satisfies the non-stop defrosting condition according to the outdoor environment temperature and the temperature of the external coil further comprises:
if the outdoor environment temperature is higher than a third set temperature and lower than or equal to the first set temperature, calculating the difference value between the outdoor environment temperature and the temperature of the outer coil;
judging whether the duration of the difference value which is greater than or equal to a second threshold value is greater than a second preset duration or not;
if yes, determining that the non-stop defrosting-inhibiting condition is met;
if not, determining that the non-stop defrosting-inhibiting condition is not met;
the second threshold is smaller than the first threshold, and the second preset duration is smaller than the first preset duration.
4. The partial load non-stop defrosting control method according to claim 3, wherein the first set temperature is in a range of 1 ℃ to 5 ℃, the second set temperature is in a range of 6 ℃ to 10 ℃, the third set temperature is in a range of-3 ℃ to 1 ℃, the difference between the second set temperature and the first set temperature is in a range of 4 ℃ to 6 ℃, and the difference between the first set temperature and the third set temperature is in a range of 3 ℃ to 5 ℃;
and/or the value range of the first threshold is 7-11 ℃, and the value range of the second threshold is 7-9 ℃;
and/or the value range of the first preset time is 1-2 min, and the value range of the second preset time is 30 s-1 min.
5. The part load non-stop defrosting control method according to claim 3, wherein the controlling the operation frequency of the compressor to be reduced and the wind level of the outer fan to be raised comprises:
if the outdoor environment is higher than the first set temperature and lower than or equal to the second set temperature, and the duration of the difference value which is larger than or equal to the first threshold value is longer than the first preset duration, controlling the operating frequency of the compressor to be reduced to the first frequency, and controlling the rotating speed of the outer fan to be increased by a preset amplitude for a third preset duration;
and/or if the outdoor temperature is higher than the third set temperature and lower than or equal to the first set temperature, and the duration of the difference value which is higher than or equal to the second threshold value is longer than the second preset duration, controlling the operating frequency of the compressor to be reduced to a second frequency, and controlling the rotating speed of the outer fan to be increased to a preset rotating speed for a fourth preset duration;
the second frequency is less than or equal to the first frequency, and the fourth preset time is longer than the third preset time.
6. The part load non-stop defrost control method according to claim 5, wherein said first frequency is 30-50% of the current frequency, and said second frequency is the lowest operating frequency of the compressor;
and/or the value range of the preset amplitude is 100 rpm-200 rpm, and the preset rotating speed is the highest rotating speed of the outer fan;
and/or the value range of the third preset time is 2 min-3 min, and the value range of the fourth preset time is 3 min-4 min.
7. The part load non-stop defrost control method of claim 1 further comprising:
after the air conditioner is started for a fifth preset time period, the step of judging whether the outdoor environment temperature and the temperature of the external coil pipe meet the condition of no-stop defrosting inhibition is executed;
and/or, executing the step of judging whether the outdoor environment temperature and the temperature of the external coil pipe meet the non-stop defrosting suppression condition once every sixth preset time.
8. The utility model provides a part load does not shut down and suppresses defrosting control device which characterized in that includes:
the acquisition module is used for acquiring the outdoor environment temperature and the temperature of the external coil pipe when the air conditioner is in heating operation;
the judging module is used for judging whether the outdoor environment temperature and the temperature of the outer coil meet the non-stop defrosting-inhibiting condition or not;
the control module is used for controlling the running frequency of the compressor to be reduced and the rotating speed of the outer fan to be increased when the judgment result is yes; and when the judgment result is negative, controlling the air conditioner to normally operate according to the established heating control logic.
9. An inverter air conditioner, comprising a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and when executed implements the method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method of any one of claims 1-7.
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| CN202211287068.3A CN115751611A (en) | 2022-10-20 | 2022-10-20 | Partial load non-stop defrosting control method and device and variable frequency air conditioner |
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| CN202211287068.3A CN115751611A (en) | 2022-10-20 | 2022-10-20 | Partial load non-stop defrosting control method and device and variable frequency air conditioner |
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